Metrics of activity in social networks are correlated with traditional metrics of scientific impact in endocrinology journals

AimsTraditional journal level metrics, as the impact factor or Scimago journal ranking indicator (SJR) measure the impact of research on other researchers, but fail to assess the reach of these publications among wider audiences. This study aims to assess the correlation between SJR and metrics of presence on social networks of endocrinology journals.Materials and methodsJournals within the area of endocrinology, diabetes and metabolism were identified from the electronic portal Scimago Journal and Country Rank, and their metrics based on the number of citation collected. Different metrics of the presence on social networks, such as the number of followers and number of tweets, were assessed. The correlation between both metrics was evaluated by calculating the Spearman correlation coefficient.ResultsOf the 232 journals evaluated, 28 (12.1%) had social networks. The median SJR (1.53 vs 0.60, p < 0.01), and H index (58.5 vs 22, p < 0.01) were significantly higher among journals with social networks. The correlation between the number of followers on twitter and the SJR was moderate (r = 0.60, p < 0.05), and it was better in journals with more than 500 publications in the last 3 years (r = 0.85, p < 0.05). The number of tweets also had a moderate correlation with the SJR (r = 0.59, p < 0.05)ConclusionsOur results suggest that the dissemination of research on social networks is moderately related to the traditional metrics of impact. Both types of metrics offer complementary information: while metrics based on social media may not perfectly predict the impact a scientific journal, it does have the advantage of immediacy.     

Scopus和WoS收录开放获取期刊的定量研究

目的 引导科学社群定量认识开放获取期刊在当前高水平学术期刊中的整体情况和发展速度,为国内同行进行开放获取期刊的学术影响力评价的实证研究提供一些参考。 方法 采用引文分析法、多元统计法分析Scopus和WoS收录的OA期刊分布情况,比较各学科OA和非OA期刊各项评价指标均值差异,以及它们在这些评价指标的进步速度上的差异。结果 发展中国家高水平学术期刊的开放获取程度普遍较高,然而中国出版的高水平学术期刊的开放获取程度却比较低;Scopus和WoS在医学、药学、生物和地球科学领域OA比例较高;Scopus和WoS收录的OA期刊在各学科上的期刊评价指标均值均低于非OA期刊,然而OA期刊相比非OA期刊在期刊评价指标的进步速度上更具有优势。结论 建议从国家层面对开放获取期刊予以经费支持并制定相应的开放获取政策,在期刊开放出版领域普及知识共享许可协议,向科研社群普及开放获取期刊的利用政策。     

基于因子分析法的科技期刊引文综合评价指标研究

目的 建立科技期刊引文综合评价指标函数,希望能对科技期刊引文综合评价工作提供参考意见。方法 选用IF、IF5、h指数、SJR、ES和SNIP为具有代表性的核心引文评价指标,通过对WoS数据库和Scopus数据库共有的1881种医学类期刊的这六大指标数值的因子分析。结果 找出对它们起支配作用的潜在影响因素：公因子F₁（平均影响力因子）和F₂（整体影响力因子）。在权衡这两个因素的基础上,构建了综合引文评价指标函数。结论 通过实例（选取专业期刊和综合期刊为样本）验证该综合指标能较好地消除期刊载文量对期刊综合影响力评价的影响。